they changed the center screw, shouldnt be a problem as of this year's bindings. they problem previously was that the pressure applied to the tracks while being ridden switch was being held back by a single screw and was being pulled out, but they reconfigured it so it's burlier now. If you have last year's dukes all you need to do is helicoil the center screw, it can pull out forcing into ski mode as well so be careful.